Three category of People

There are three category of people:

Category A is energizers. They're people whom you can trust, admire and respect; they always give you good advice and help you grow.

Category B is people you like well enough. They are reasonable to work with.

Category C is battery drainers. They're users, exploitation agent or people you believe, for whatever reason, are your enemies.

Now think about the time and energy you spared on people in each category, including the time you spend thinking and talking (complaining!) about them. The Category A people are the ones you should be reaching out to: if you go to lunch, they are the ones you invite. Category B people may have roles that make them important to you, so stay in contact with them. But restrict the time you spend on Category C people as much as you can.